Attachment for filament spinning machines



June 26, 1934. A. GREENHALGH ATTACHMENT FOR FILAMENT SPINNING MACHINES Filed May 1, 1933 Patented June 26, 1934 ATTACHMENT FOR FILAMENT SPINNING MACHINES Arthur Greenhalgh, Pawtucket, R. 1.

Application May 1, 1933, Serial No. 668,853

5 Claims.

This invention relates to improved apparatus for use in the manufacture of artificial silk threads or filaments.

In the manufacture of artificial silk threads or filaments, sulphuric acid in a more or less diluted form is used and this acid has heretofore found its way to the bearings and other parts of the motor resulting in the gumming of the motor bearings and corrosion of the bearings and motor spindle, and it is therefore the primary purpose of this invention to provide a guard mounted below the filament receiving pot to protect the driving motor from becoming gummed, thereby decreasing the eiliciency of operation of the motor resulting from acid solutions and viscous material finding its way into the motor and causing considerable damage.

A further object of this invention is to provide a guard encircling the motor spindle which passes upwardly through the shield box and upon which the usual filament receiving pot is placed so that acid solutions thrown ed by the filament receiving pot will not find their way down between the motor shaft and the box shield but will be drained from the box shield in the usual manner.

A further purpose of this invention is to provide a guard of the above mentioned character, a portion of which may be removed for cleaning purposes after the pot has been removed from its frictional seat on the upper portion of the motor spindle.

A further purpose of this invention is to provide a novel bushing adapted to be interposed between the filament receiving pot and the upper end of the motor spindle whereby the filament receiving pot can be removed by merely raising the same and in this manner eliminating the use of screws or keys for preventing slippage of the motor spindle relative to the filament receiving pot.

Other objects and advantages of the invention, will become apparent during the course of the following description, forming a part of this specification and in which,

Figure 1 is a vertical cross-sectional view, showing a portion of a filament spinning machine and illustrating the manner in which the invention is applied to the box shield between the motor and the filament receiving pot;

Figure 2 is an enlarged side elevational view of a filament receiving pot partly in section, illustrating the manner in which the pot is assembled frictionally relative to the motor spindle and further showing the manner in which the spindle guard encircles the hub of the filament receiving pot and also enclosing the upper end of the motor spindle;

Figure 3 is a top elevational view of the motor guard showing the same detached from the shield box and greatly enlarged;

Figure 4 is a bottom elevational View of the motor guard embodying this invention illustrating the annular downwardly extending flange for centering the guard relative to the motor spindle; and

Figure .5 is a vertical cross-sectional view of the motor and spindle guard showing the manner in which the device is formed in two sections telescoped together so that one section may be readily removed for the purpose of cleaning.

In the drawing, wherein for the purpose of illustrating the invention and wherein like reference characters will be employed to designate like parts throughout the same, the reference character A will generally be employed to designate a filament which has been freshly precipitated and which passes upwardly over the usual Godet wheel B.

The filament A having an adhesive surface partially adheres to the Godet wheel B and is removed in the usual manner by means of a stream of fluid issuing from a jet C disposed tangentially to the Godet wheel so that the fluid may be received in a shield D particularly intended for 001- lecting the fluid after the stream has acted upon the filament A.

As the filament leaves the Godet wheel 13 it passes downwardly into a guide tube E which is reciprocated by any suitable apparatus (not shown) and the upper end of the guide tube'E is provided with a funnel-shaped opening F. Disposed in the funnel-shaped opening is a tube G adapted to be fed with a supply of fiuid through a rubber tube l-I fed from a supply pipe I in the usual manner. The usual practice is to interpose a cock J between the rubber hose H and the pipe I so that the amount of fluid supplied to the guide tube E may be increased or decreased. The fiuid passing through the guide tube E assumes a swirling motion in order to prevent the filament thread A from adhering to the side walls thereof thus allowing the filament to pass downwardly into a revolving pot K so that the fluid will be thrown off into the shield box L by centrifugal force whereupon it is collected from the trough M in a suitable receptacle N.

A removable cover 0 is positioned on the shield box L for preventing the solution from passing over the top walls of the box and finding its way down the sides thereof.

The electric motor P is supported in any suitable manner so that the spindle thereof Q extends vertically into the shield box L so that the filament receiving pot K can be seated thereon which has heretofore been accomplished by means of set screws and key guides and keys.

The above apparatus described is old in the art and is merely shown for the purpose of illustrating the manner in which the invention is applied to an apparatus of this character.

The invention comprises a guard for protecting the electric motor B against acid and viscous solutions to prevent deterioration and damage to the field and rotor winding as well as the brushes of the motor. The guard includes a cylinder 6 having a radial flange '7 formed substantially intermediate the ends of the cylinder and formed so that the flange extends annularly therefrom so that when the cylinder 6 is positioned in the opening 8 formed in the bottom wall of the shield box L, the flange '7 will fit the contour thereof enabling the cylinder 6 to extend in a vertical fashion. The motor spindle Q extends upwardly and centrally through the cylinder 6 and is provided with a tapered end 9 as clearly illustrated in Figure 2 so that a bushing 10 having a corresponding opening may be fitted upon the end of the spindle to form a friction grip thereon. The bushing 10 is provided with a radial flange 11 for limiting the downward movement of the filament receiving pot hub 12 which is provided with a bore 13 for receiving the upper portion of the bushing 10 in such a manner that a closely fitted thimble 14 may be interposed between the bushing 10 and bore 13 of the hub 12 to insure a close fit and which will not permit rotation of the shaft 9 relative to the filament receiving pot K thereby eliminating the use of set screws or the like.

Mounted on the upper portion of the cylinder 6 is a removable guard 15 having a sliding fit as clearly shown in Figure 5 and said guard 15 is provided with a central opening 16 for receiving the hub 12 of the pot filament K. After the guard 15 has been slipped in place upon the cylinder 6 so that the inwardly extending portion terminating in the opening 16 encircles the hub 12, it is turned until the lug 17 is received in an opening 18 thereby preventing the turning of the shield 15 relative to the cylinder 6.

If desired, the flange 7 may be fastened to the bottom wall of the shield box L by means of bolts or the like and it is to be understood that the guard 15 may include a cylindrical portion 19 having its upper end terminating in a conical portion or either a semispherical portion as desired. In either construction, the opening embracing the filament receiving pot hub 12 should be slanting downwardly toward the flange 7 so that viscous and acid solutions will drain downwardly and thereby be prevented from finding its way to the hub 12 and motor spindle 9.

The motor C is further protected by means of an annular flange 20 formed on the armature shaft Q and having a slanting surface 21 so that any viscous or acid solution finding its way down the shaft will be thrown by centrifugal force away from the motor casing P.

It is to be understood that the form of the invention herewith shown and described is to be taken as the preferred embodiment of the invention and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the sub-joined claims.

I claim:---

1. In a filament spinning machine having a shield box with an opening in the bottom wall thereof, electric motor and filament receiving pot, a guard interposed between the filament pot and electric motor comprising a cylindrical sleeve adapted to be received in the bottom wall opening of the shield box; a flange carried by the cylinder adapted to lie flush with the portion of the shield box surrounding the opening, and a sleeve having a conical upper portion adapted to surround the hub of the filament pot.

2. In a filament spinning machine having a shield box with an opening in the bottom wall thereof, electric driving motor and filament pot carried on the upper end of the motor spindle, a guard member including a cylindrical portion having a radial flange adapted to be inserted in the bottom wall opening of the shield box, so that the flange will extend over the portion thereof surrounding the opening, a frusto-conical guard member fitted over the cylinder so that the hub of the filament pot may be surrounded by the conical portion of the guard member and means between the flanged cylinder and frusto-conical guard member for preventing rotation thereof with respect to each other.

3. In a filament spinning machine having a shield box with an opening in the bottom wall thereof, electric driving motor and filament pot carried on the upper end of the motor spindle, a guard member including a cylindrical portion having a radially extending flange tilted slightly with respect to the cylindrical portion, said cylindrical portion being adapted to be received in the bottom wall opening of the shield box, and a frusto-conical member fitted on the upper portion of the cylindrical portion of the guard member adapted to encircle the hub of the filament pot and prevent viscous solutions from gaining access to the electric motor.

4. In a filament spinning machine having a shield box with an opening in the bottom wall thereof, filament pot and electric drive for the filament pot, a flange cylindrical member mounted in the bottom wall opening of the shield box through which the spindle of the electric drive extends, a frusto-conical member mounted on the upper portion of the flanged cylindrical member having an opening for enclosing the hub of the filament pot and means for preventing rotary movement of the frusto-conical member with respect to the flanged cylindrical member.

5. In a. filament spinning machine having a shield box having an opening in its bottom wall, an electric motor and a filament pot mounted on the upper end of the electric motor spindle, a cylindrical member having a flange adapted to be inserted in the opening in the shield box so that the flange overlies the edge of the opening, and a frusto-conical guard member telescoped upon the upper portion of the cylindrical member, said frusto-conical guard member having an opening for allowing the passage of the filament pot hub whereby the hub will be housed for preventing the admission of viscous fluids to the parts of the electric motor.

ARTHUR GREENHALGH. 

